Company lists · Data refreshed September 2026

Top 25 Transportation planning companies based in the United States

Name: Transportation planning companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 721 companies tracked

RevenueBase identified 721 transportation planning companies headquartered in the United States as of September 2026 and tracks 21,117 professional contacts across them, including 9,467 with verified work emails. Portland is the largest hub.

This list covers transportation planning companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

721Companies

21,117Contacts tracked

9,467Verified emails

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The 25 largest transportation planning companies based in the United States

Ranked by team size

Top 25 of 721 transportation planning companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transportation planning companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	VHB	Indirect evidence	Watertown, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,277 contacts →
	Indirect evidence “We are VHB.” Source: RevenueBase Database · checked Sep 19, 2026
2	Transystems	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 19, 2026	1,001-5,000	850 contacts →
	Partial evidence “TranSystems plans, designs, and oversees construction to enhance the transportation networks and infrastructure that makes communities more livable today and in the future.” Source: RevenueBase Database · checked Sep 19, 2026
3	Hallcon Corporation	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	5,001-10,000	840 contacts →
	Partial evidence “Hallcon is a transportation and infrastructure services company focused on turnkey solutions for clients such as technology companies, manufacturers, railroads, universities…” Source: RevenueBase Database · checked Sep 19, 2026
4	SRF Consulting Group	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 19, 2026	201-500	471 contacts →
	Strong evidence “SRF Consulting Group is a full-service consulting firm with a broad base of award-winning services, including- Transportation and Transit Planning - Community and Land Use…” Source: RevenueBase Database · checked Sep 19, 2026
5	Fehr & Peers	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 19, 2026	201-500	448 contacts →
	Strong evidence “We are a transportation planning and engineering firm with 24 offices and over 400 staff nationwide.” Source: RevenueBase Database · checked Sep 19, 2026
6	SAN Diego Association Of Governments Sandag	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	201-500	435 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
7	Infrastructure Consulting & Engineering	Partial evidence	West Columbia, SC, United StatesHQ checked Sep 19, 2026	501-1,000	425 contacts →
	Partial evidence “Founded in 2005, Infrastructure Consulting & Engineering, LLC (ICE) provides transportation consulting and engineering services across the Southeast.” Source: RevenueBase Database · checked Sep 19, 2026
8	Kittelson & Associates, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	201-500	411 contacts →
	Partial evidence “We solve complex transportation problems to improve people's everyday lives.” Source: RevenueBase Database · checked Sep 19, 2026
9	OTAK	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	201-500	341 contacts →
	Indirect evidence “Otak values people, both those in our workplace and those that are impacted by the projects we undertake.” Source: RevenueBase Database · checked Sep 19, 2026
10	Toole Design Group	Strong evidence	Silver Spring, MD, United StatesHQ checked Sep 19, 2026	201-500	332 contacts →
	Strong evidence “Toole Design is the nation's leading planning, engineering, and landscape architecture firm specializing in active, multimodal transportation.” Source: RevenueBase Database · checked Sep 19, 2026
11	LSA	Strong evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	201-500	332 contacts →
	Strong evidence “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
12	Cambridge Systematics, INC	Partial evidence	Medford, MA, United StatesHQ checked Sep 19, 2026	201-500	263 contacts →
	Partial evidence “We are transportation specialists, dedicated to ensuring that transportation investments deliver the best possible results.” Source: RevenueBase Database · checked Sep 19, 2026
13	LADOT	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	223 contacts →
	Strong evidence “LADOT leads transportation planning, project delivery, and operations in the City of Los Angeles.” Source: RevenueBase Database · checked Sep 19, 2026
14	Corradino	Strong evidence	Miami, FL, United StatesHQ checked Sep 19, 2026	201-500	205 contacts →
	Strong evidence “Corradino is a leading multidisciplinary engineering, planning, and consulting firm, dedicated to delivering innovative solutions in transportation and infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
15	Felsburg Holt & Ullevig	Strong evidence	Greenwood Village, CO, United StatesHQ checked Sep 19, 2026	51-200	197 contacts →
	Strong evidence “Felsburg Holt & Ullevig is a consulting firm specializing in transportation planning, traffic engineering, civil engineering design, water resources, and environmental services.” Source: RevenueBase Database · checked Sep 19, 2026
16	Transpo Group	Indirect evidence	Kirkland, WA, United StatesHQ checked Sep 19, 2026	51-200	193 contacts →
	Indirect evidence “Today’s project challenges require world class expertise, innovative approaches, and the knowledge to effectively deliver cost-effective solutions.” Source: RevenueBase Database · checked Sep 19, 2026
17	DKS Associates	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	192 contacts →
	Indirect evidence “Our work helps clients explore options, make sound decisions, and build a transformative future.” Source: RevenueBase Database · checked Sep 19, 2026
18	Revenue Technology Services RTS	Partial evidence	Plano, TX, United StatesHQ checked Sep 19, 2026	201-500	190 contacts →
	Partial evidence “Revenue Technology Services (RTS) is a worldwide provider of marketing and planning solutions that includes scheduling, revenue management, revenue planning and pricing solutions…” Source: RevenueBase Database · checked Sep 19, 2026
19	Wells Associates	Partial evidence	Tysons, VA, United StatesHQ checked Sep 19, 2026	n/a	183 contacts →
	Partial evidence “For 30 years, our professionals have created and implemented sustainable, cost-effective transportation solutions for commercial, residential, governmental, and institutional…” Source: RevenueBase Database · checked Sep 19, 2026
20	Nelson Nygaard Consulting Associates	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	162 contacts →
	Indirect evidence “Nelson\Nygaard Consulting Associates, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
21	ITE A Community Of Transportation Professionals	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	155 contacts →
	Partial evidence “Founded in 1930, ITE is an international membership association of transportation professionals who work to improve safety and mobility for all transportation system users and…” Source: RevenueBase Database · checked Sep 19, 2026
22	Patel, Greene & Associates, LLC PGA	Strong evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	51-200	151 contacts →
	Strong evidence “Patel, Greene and Associates (PGA) is a leader in innovative transportation engineering and planning.” Source: RevenueBase Database · checked Sep 19, 2026
23	Avail Technologies, INC	Indirect evidence	State College, PA, United StatesHQ checked Sep 19, 2026	51-200	147 contacts →
	Indirect evidence “Avail Technologies, headquartered in State College, Pennsylvania, is pioneering total transit solutions.” Source: RevenueBase Database · checked Sep 19, 2026
24	Avenue Consultants	Strong evidence	Taylorsville, UT, United StatesHQ checked Sep 19, 2026	51-200	131 contacts →
	Strong evidence “Avenue Consultants is a specialized transportation and land development engineering and planning firm that provides innovative and professional services to clients in the public…” Source: RevenueBase Database · checked Sep 19, 2026
25	Transwest	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	201-500	123 contacts →
	Indirect evidence “TransWest gets people to-and-from where they need to go, safely and stress-free.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: transportation planning companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names transportation planning companies.
Partial evidence: Its own public description names part of transportation planning companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transportation planning companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 721 transportation planning companies based in the United States

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Transportation planning companies based in the United States at a glance

As of Sep 19, 2026

44.8%Verified-email coverage

29.3Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · Portland

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

392

11-50

199

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 721 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among transportation planning companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “transportation planning companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names transportation planning companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among transportation planning companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 9,467 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names transportation planning companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many transportation planning companies are there based in the United States?

RevenueBase identified 721 transportation planning companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

VHB, headquartered in Watertown, tops this list with the largest team on record.

Which city has the most transportation planning companies?

Portland leads with 17 headquartered companies, followed by New York (16) and Tampa (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,467 verified decision-maker contacts tracked across these 721 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.